2 . :
- , , . ;
- , ;
- , , , ; , ( , ).
2
, , , 2.1 t =10. 1 S=0,4(t3 +2t) , R1=0,1 ; R 2=0,15 ; R3=0,3 ; R4=0,6.
: S=0,4(t3 +2t), R1= 0,1, R2= 0,15, R3= 0,3, R4= 0,6
.2.1 .2.2
1. 1 ( ..2.2)
2. 2
3.
4. 3
5. 3
6. C
t=2c: VM=(6*22-4)0,15=3 /
7. (. . 11)
t=2c; 
8.
t=2c: 
9.
3
1. .
2. . .
3. .
4. .
5.
(1)
- , Wz - ( )
(2)
[], q, F .
4
1. τmax = │Mk │max/Wp ≤ [τ]
: rmax- ;
│Mk │max - ;
Wp -
Wp = πD3/16 (1-c4) ≈ 0,2 D3(1-c4), c = d/D
. 2. d = d1, D = d
D ≥ 
d = cD
2. /i,
Jp -
= 0.
3. i
4.
5. ( = 0) d = D ( ).
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6 .
